![]() ![]() Without this infrastructure, the health informatics evidence base will be weak and knowledge will not cumulate. 3 A robust library of reusable instruments creates an infrastructure for research that facilitates the work of study design, strengthens the internal and external validity of studies, and facilitates systematic reviews. ![]() It has been suggested that health informatics has a paucity of well-known and consistently used research constructs with established instruments for measuring them. Just as poor study design or inadequate sample size can jeopardize the integrity of a study, so too can measurements that are to a significant extent unreliable or invalid. 1 If these are absent, investigators must proceed carefully based only on assumptions about what their measurements mean. Before using a new instrument, investigators should carry out measurement studies that explore whether the methods are acceptably reliable and valid. ![]() For this reason, researchers use preexisting measurement instruments wherever possible and typically only develop their own instruments when there is no existing suitable instrument or when they are measuring a new construct unaddressed in published research. Measurement is fundamental to empirical science and requires instruments that are valid and reliable: that provide reproducible results and measure what they claim to measure. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |